Decision Trigger – Is this rifle for you?
 
✔️ Shoot at will if:
you want a modern special forces-style rifle — the URG-I 11.5" Block 3 replicates the latest U.S. military configuration used by elite units, with authentic controls and layout
you value strong recoil and realism — the upgraded blowback engine with large piston delivers one of the hardest-kicking MWS platforms
you like full customization — M-LOK rail, ambidextrous controls, and 14mm threading make it highly adaptable to optics and accessories
 
❌ Hold your fire if:
you want high-capacity gameplay — 35-round mags keep it realistic but require frequent reloads
you prefer low-maintenance platforms — like all GBBRs, it requires proper gas management and regular upkeep
you want maximum out-of-the-box power — it’s tuned for efficiency and consistency rather than pushing high FPS
 
『Takeaway: The URG-I 11.5" Block 3 is a next-generation MWS rifle—compact, aggressive, and built for realism. It combines strong recoil, elite military styling, and full modularity, making it one of the most immersive AR platforms available. But like all GBBRs, it rewards disciplined play and maintenance over high-capacity, low-effort gameplay.』
 
 
Specifications
Hop-Up: Variable adjustment system
Fire Modes: Full-auto / Semi-auto selectable
Overall Length: 750 mm / 825 mm (stock fully extended)
Barrel Length: 250 mm
Weight: 2,935 g (with empty magazine)
BB Type: 6 mm (0.20–0.25 g)
Power Source: Dedicated gas (HFC134a or equivalent non-Freon gas recommended)
Magazine Capacity: 35 + 1 rounds
 
The 11.5-inch barrel URG-I configuration—modeled after the systems used by the United States Army Special Forces—is now available as a gas blowback machine gun. The Tokyo Marui URG-I 11.5" Block 3 Gas Blowback Rifle version reproduces the distinctive 10.5-inch handguard and STR-type stock, meticulously capturing the unique specifications of the URG-I platform with exceptional attention to detail.
 
Powerful Blowback Action
A newly developed blowback engine with a large piston of approximately 19 mm delivers strong and realistic recoil. The bolt cycles in synchronization with firing, producing a pronounced and immersive recoil sensation.
 
Enhanced Durability
Durability improvements include the Z-System mechanism, which reduces wear on the bolt catch, and a piston absorber that mitigates impact stress on internal components. A friction-reducing bolt roller minimizes mechanical resistance, while a barrel clamp system maintains precise alignment and prevents loosening caused by recoil forces. These features significantly enhance long-term reliability under demanding conditions.
 
Authentic Operational Features
Realistic mechanical functions replicate the behavior of the original platform. The charging handle is used for chambering the first round, and the bolt catch operates when the magazine is empty. The STR-type stock offers six adjustable positions, enabling ergonomic customization and faithful reproduction of authentic handling characteristics.
 
M-LOK Rail System
The handguard incorporates the M-LOK modular rail system and reproduces the 10.5-inch Super Modular Rail (SMR) MK16 M-LOK DDC design. Three M-LOK rail segments (3-slot, 5-slot, and 7-slot) with a 20 mm Picatinny interface are included. These accessories can be installed or removed using the provided hex wrench, allowing flexible customization.
 
Faithful Design Details
The model accurately reproduces key URG-I features, including the DD-style gas block, 11.5-inch barrel, and ambidextrous charging handle. These design elements reflect the original specifications and enhance visual and operational authenticity.
 
Folding Front and Rear Sights
Both front and rear sights are adjustable—vertical adjustment for the front sight and multi-directional adjustment for the rear. The foldable design enables compatibility with optical sights, and the mounting rails allow convenient repositioning or removal as needed.
 
Muzzle Compatibility
Removing the flash hider enables the installation of suppressors or other muzzle accessories with 14 mm reverse-thread compatibility, supporting a wide range of customization options.
 
Die-Cast Aluminum Magazine
A 35-round die-cast aluminum magazine replicates the weight and feel of a fully loaded magazine, contributing to realistic handling and balance.